1. materials: Our brush rods are made of nylon and strength, which is not only soft and elastic, is not easy to use, but it is also easy to clean and it is not easy to oxidize. These features make them have a long service life.2. Save costs: Our DIY dryer ventilation cleaning kit helps you avoid costly repairs due to dirt accumulation or accidental fires. It is designed to offer results and allows you to clean your ventilations regularly without paying a professional service fee for cleaning.3. It can be used with an electric drill: With the help of a rotation force, the sows can eliminate even the most difficult accumulation inside of the fireplace or fireplace. It helps prevent smoke fires. to clean your chimney from down or up through your fireplace. Clean your stove yourself and save money. (The package does not include electrical holes)4. Use in reduced spaces: The rods provided in our kit are extremely durable, flexible and bend with little or no effort. For use with narrow angles, fix the threadless part of the extension rods directly to a drill as if it were a normal drill. Keep the brushes by turning at low speed and use a stable and easy pressure to help work the brush around the curves in ventilation.